72600725 has 24 divisors (see below), whose sum is σ = 92572200. Its totient is φ = 56459520.

The previous prime is 72600721. The next prime is 72600757. The reversal of 72600725 is 52700627.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 11276164 + 61324561 = 3358^2 + 7831^2 .

It is not a de Polignac number, because 72600725 - 2² = 72600721 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72600721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207851 + ... + 208199.

It is an arithmetic number, because the mean of its divisors is an integer number (3857175).

Almost surely, 2^72600725 is an apocalyptic number.

It is an amenable number.

72600725 is a deficient number, since it is larger than the sum of its proper divisors (19971475).

72600725 is a wasteful number, since it uses less digits than its factorization.

72600725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72600725 is about 8520.6059056853. The cubic root of 72600725 is about 417.1705601514.

The spelling of 72600725 in words is "seventy-two million, six hundred thousand, seven hundred twenty-five".